The driver of some device can't handle the suspend/hibernate event as expected 
from our investigation. 
After upgraded to Intrepid final, we can't reproduce it on HP-2230s.
 
But I can still reproduce this issue on SONY Vaio VGN-Z540. There's a patch 
fixing this bug for the SONY laptop which already in kernel 2.6.28-rc3:

commit 6158d3a2323835546c7cf83a170316fa77b726e0
Author: Matthew Garrett <[EMAIL PROTECTED]>
Date:   Wed Oct 29 14:01:03 2008 -0700

    sony-laptop: ignore missing _DIS method on pic device

    At least the Vaio VGN-Z540N doesn't have this method, so let's not fail
    to suspend just because it doesn't exist.

    Signed-off-by: Adam Jackson <[EMAIL PROTECTED]>
    Acked-by: Mattia Dongili <[EMAIL PROTECTED]>
    Cc: Len Brown <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>


** Attachment added: "sony-laptop: ignore missing _DIS method on pic device"
   http://launchpadlibrarian.net/19634610/sony-laptop.patch

-- 
OS can't hiberate and suspend.
https://bugs.launchpad.net/bugs/283126
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